Method of making multicolored concrete floors



May 4 1926. 1,583,516

w. H. ANFIELD METHOD OF MAKING MULTICOLORED coucnms moons Filed July 21.1924 6 of Missouri,

Patented May 4, 1926.

WILLIAM HENRY ANFIELID, ase. LOUIS, MISSOUBI.

,METHOD or Maxine MULTIGOLORED ooncnnrn moons.

Application filed. July 21,

To all whom itmag concern:

Be it known that I, WILLIAM HENRY AN- FIELD, a citizen of the UnitedStates, and resident of the city of St. Louis and State have inventedcertain new and useful Improvements in .Methods of. Mak: ingMulticolored Concrete Floors, of which the following is a specification,containing a full, clear, and exact description, reference being had tothe accompanying drawings, forming a part thereof. 4

My invention relates to improvements inevice and method of makingmulti-colored concrete floors, especially what is commercially known asterrazzo, and has for its primary object the construction ofmulticolored terrazzo floors without precastmg and laying individualblocks or slabs.

Referring to the drawings Fig. 1 is a fragmental perspective view of aportion of a floor with the device or form which I employ placed thereonbefore the floor is thoroughly set, illustrating the first step ofprocess, after the floor has been completed, in forming the multicoloredsurface Fig. 2 is a similar view with the coloring material tamped inand the form or pattern removed;

Fig. 3 is a similar view illustrating the multi-colored floor finishedor scored to represent individual blocks or tile;

Fig. 4 is a longitudinal section of the deviceor form.

In carrying out my improved process or method I commence with" the flooror concrete base as laid in by the builder, this concrete base isindicated as 3 and is formed out of broken stones, sand and cement andis properly reinforced in any suitable manner. This part of myimprovement is well known and needs no further explanation. On top ofthis concrete base 3 I place a layer 4: of cement and sand properlymixed with water. This is the leveling up'layer as the concrete layer isgenerally left rough and in an uneven state. After I level up thesurface of the concrete base as stated, I then apply my flooring asindicated at 5, this flooring is formed of concrete and sand and brokengranite or marble properly mixed with water andis formed in onemonolithic layer. Before the layer 5 becomes thorough- 1y set, I takethe device or form 6 andplace on the design desired. 6 is furtherprovided along the edges with 1924; Serial No. 727,148.

it thereon as indicated in Fig. 1. This device or formfi is made out ofrelatively'thin sheet metal and is provided with cut out portions .7,theportions 8 being not removed. These cut away portions 7 may be of anysuitable size and shape depending of course The device or formreinforcing'strips -9 and with handle "attach; ments '10 by means ofwhich it may be manipulated. \Vhen IplaceJthe form "6 on the floor'layer5, I then apply inuthecut away port-ions 7 crushed marble chips 11,

which are tamped or, trowelled or both into the surface of the floorlayer 5. These marble chips of course, are of'diflferent or contrastingcolors from the surface of the floor layer 5. After these marble chips11 a have been impressed into the surface of the layer 5 I then removethe form or device 6 and the entire surface is then rolled and finished.i

It will be understood that in the operation of applying the coloredmaterial or marble I chips 11, the walls of the openings 7 will defineand retain these chips in regular and defined position. v

'After the formation of thefioor, as above set forth, I then cut groovesby means of a suitable cutter along the edges of the colored surfaces orportions, such as at 12,,these grooves are cut through the floor layer 5and partially through the layer 4 and preferably after the same hashardened. I then fill in these grooves by means of a body ofselfhardening material 13 and then this is finished off. These groovesare for the purpose of giving the floor the appearance of a precast. orslab structure, and also prevents cracks from settling of the floor orexpansion.

It has heretofore been the practice, as far as I have been informed,when making a multi-colored floor surface it was necessary to'precastsmall individual slabs and then lay them in cement which was expensive,

slow and tedious and required the employment of skilled labor. By makingmy concrete floormonolithic and applying the colored marble chips andforming the grooves therein as contemplated in this invention, I

cretefloorand of a neater appearance than could possibly be madeaccording to the old am able to make a stronger and cheaper oonpracticeof precasting and setting of inclividual slabs or tiles.

Having fully described my invention, What I claim is 1. The hereindescribed method of mak ing multi-colored concrete floors which consistsin forming a concrete supporting base, applying to said base a levelingand smoothing layer of sand and concrete, applying to said layer of sandand concrete a monolithic self-hardening layer and rolling the same,laying on said monolithic floor layer before it becomes set a formhaving certain portions cut away, filling in the cut away portions withcolored material or rock chips, tamping the said chips or rocks into themonolithic floor layer, removing said form, rolling the monolithic floorlayer and colored chips so as to form a continuous smooth surface,forming channels in the monolithic layer along the edges of the coloredportions, and filling said channels with self-hardening material.

2. The herein described method of making multi-colored concrete floors,which consists in forming a concrete supporting base, applying on saidbase a leveling and smoothing layer of sand and cement, applying to saidsmoothing layer a monolithic selfhard ening layer and rolling the same,laying on said monolithic layer before it becomes set a form havingcertain portions thereof cut away, filling in the cut away portions ofsaid form with colored material vor rock chips, tamping said chips orrocks into the monolithic floor layer while the form is in position,removing said form, rolling the monolithic floor layer and the addedmaterial so as to form a smooth surface, permitting the same to hardenforming channels in the monolithic layer along the edges of the addedportions, and then filling in said channels with a self-hardeningmaterial.

In testimony whereof, I have signed my name to this specification.

WILLIAM HENRY ANFIELD.

